MAINT: update runtests.py for annoying easy_install behavior.

Author: rgommers

runtests.py

@@ -348,7 +348,18 @@ def build_project(args):
     cmd += ['build']
     if args.parallel > 1:
         cmd += ['-j', str(args.parallel)]
-    cmd += ['install', '--prefix=' + dst_dir]
+    # Install; avoid producing eggs so scipy can be imported from dst_dir.
+    cmd += ['install', '--prefix=' + dst_dir,
+            '--single-version-externally-managed',
+            '--record=' + dst_dir + 'tmp_install_log.txt']
+
+    from distutils.sysconfig import get_python_lib
+    site_dir = get_python_lib(prefix=dst_dir, plat_specific=True)
+    # easy_install won't install to a path that Python by default cannot see
+    # and isn't on the PYTHONPATH.  Plus, it has to exist.
+    if not os.path.exists(site_dir):
+        os.makedirs(site_dir)
+    env['PYTHONPATH'] = site_dir
 
     log_filename = os.path.join(ROOT_DIR, 'build.log')
 
@@ -391,9 +402,6 @@ def build_project(args):
             print("Build failed!")
         sys.exit(1)
 
-    from distutils.sysconfig import get_python_lib
-    site_dir = get_python_lib(prefix=dst_dir, plat_specific=True)
-
     return site_dir
 
 
@@ -429,8 +437,8 @@ def lcov_generate():
                      '--output-file', LCOV_OUTPUT_FILE])
 
     print("Generating lcov HTML output...")
-    ret = subprocess.call(['genhtml', '-q', LCOV_OUTPUT_FILE, 
-                           '--output-directory', LCOV_HTML_DIR, 
+    ret = subprocess.call(['genhtml', '-q', LCOV_OUTPUT_FILE,
+                           '--output-directory', LCOV_HTML_DIR,
                            '--legend', '--highlight'])
     if ret != 0:
         print("genhtml failed!")